coh_coverage function

Calculate Vaccine Coverage

This function returns the vaccination coverage of a dose along the cohort study. The coverage can be calculated grouped by year, day, and month. This must be specified in the parameter unit. If there are no records for some dates, the function assigns 0 instead of NA to calculate the cumulative coverage.

coh_coverage(
  data_set,
  vacc_date_col,
  unit = c("day", "month", "year"),
  date_interval = NULL
)

Arguments

• data_set: data.frame with cohort information.
• vacc_date_col: Name of the column(s) that contain the vaccine date to calculate the coverage.
• unit: Aggregation unit, must be either "year", "month", or "day".
• date_interval: If NULL, the function calculates the coverage interval based on the min() and max() of the vacc_date_col. It is also possible to pass a custom date interval to truncate or expand the date interval (see example).

Returns

data.frame with the number of vaccine doses per date, cumulative count of doses, and vaccine coverage.